Trail Ridge (U.S. 34): This road through Rocky Mountain National Park is the highest continuous auto road in the country. Itâs truly an all-American icon â the road itself is listed on the National Register of Historic Places.
Lumber Dimensions. 2x4s are not actually 2 inches by 4 inches. When the board is first rough sawn from the log, it is a true 2x4, but the drying process and planing of the board reduce it to the finished 1.5x3.5 size. Here are the common sizes of lumber, and their actual sizes.
Report Abuse. Using 2x6 floor joists, the average width of a 2x6 is 5 and 1/2 inches. The plywood floor is roughly 3/4 inches. The ceiling underneath the 2nd floor is covered in 1/2 inch drywall.est Answer: Use the span tables out of your local Building Code to determine the size of the joists you will require in relation to the span between supports. The National Building Code permits 2x6 @ 16 c/c to span 9' 5. If your span is greater you will most likely need 2x8 or 2x10.